Sanitary Sine Pumps

● 3-A SANITARY DESIGN● EHEDG CERTIFIED PATH● FDA-COMPLIANT MATERIALS● ASME-BPE● 316L ELECTROPOLISHED FINISH● FREE PUMP SIZING IN 24 H ● 3-A SANITARY DESIGN● EHEDG CERTIFIED PATH● FDA-COMPLIANT MATERIALS● ASME-BPE● 316L ELECTROPOLISHED FINISH● FREE PUMP SIZING IN 24 H
Home/Pumps/Sine Pump
Positive Displacement · Single Sine Rotor

Sanitary Sine Pumps

A single sinusoidal rotor moves product in one smooth, near pulse-free flow — gently enough for whole fruit and delicate gels, across viscosities from water to heavy paste. Strong self-priming suction and a wide-open, easy-clean body built to 3-A and EHEDG hygienic design.

Request a Quote → Download datasheet Talk to an engineer  +1 (000) 000-0000
≤ 409GPM (93 m³/h)
≤ 220psi (15 bar)
−12.3psi suction (−0.85 bar)
8McP max viscosity
316L3-A · EHEDG
Browse by configuration StandardHigh-suctionHigh-viscosityLarge solidsMobile cartAseptic / alloy

Gentle, near pulse-free transfer across every viscosity

A sanitary sine pump uses a single sine-wave-shaped rotor that turns inside the casing, forming four moving chambers that carry product smoothly from inlet to outlet. The flow is steady and almost pulse-free, the chambers are large and open, and there is no close-clearance pinch — so it carries whole fruit, soft solids and delicate gels intact, and pumps anything from thin liquid to heavy paste. It self-primes strongly and strips lines clean. Tell us your duty point and we will size the right model — free, within 24 hours. New to this pump type? Read how a sine pump works.

Showing 6 representative models Sort by
StandardDONJOY sanitary sine pump standard model

Sine — Standard

Max flow
409 GPM (93 m³/h)
Max pressure
220 psi (15 bar)
Max temp
266 °F (130 °C)
Flow
Near pulse-free
Material
316L · Ra ≤ 0.4 µm
Request quote
High-suctionDONJOY high-suction self-priming sine pump

Sine — High-Suction

Inlet vacuum
−12.3 psi (−0.85 bar)
Duty
Self-prime · strip lines
Use
Empty tanks · drums
Max flow
409 GPM (93 m³/h)
Material
316L EP
Request quote
High-viscosityDONJOY high-viscosity sine pump for pastes

Sine — High-Viscosity

Viscosity
up to 8,000,000 cP
Duty
Pastes · gels · fillings
Max pressure
220 psi (15 bar)
Flow
Gentle · low-pulse
Material
316L EP
Request quote
Large solidsDONJOY sine pump for whole fruit and soft solids

Sine — Gentle / Solids

Rotor
Single sine wave
Duty
Whole fruit · soft solids
Shear
Very low
Cavities
Large, open
Material
316L EP
Request quote
Mobile cartDONJOY mobile sine pump on cart

Sine — Mobile Cart

Format
Cart / skid
Drive
VFD · lockable controls
Duty
Move between lines
Max flow
409 GPM (93 m³/h)
Material
316L EP
Request quote
Aseptic / alloyDONJOY aseptic sine pump in duplex and Hastelloy

Sine — Aseptic / Alloy

Finish
Ra ≤ 0.4 µm
Material
ASME-BPE 316L (1.4435)
Alloy
Duplex 2205 · Hastelloy C276
Clean
CIP / SIP
Duty
Pharma · aggressive media
Request quote
12Next →

Specs reflect the DONJOY sine (sinusoidal) pump range we reference: up to 409 GPM (93 m³/h) and 220 psi (15 bar), 130 °C (266 °F) for CIP/SIP, viscosity from 1 to 8,000,000 cP, with inlet vacuum to −12.3 psi (−0.85 bar). Wetted parts in 316L (1.4404), duplex 2205 or Hastelloy C276; surface finish, seals, connections, cart/skid and the supply source are matched to your specification and may be made to order.

Hygienic standards

Built to the standards your auditor checks

Every sine pump is specified to crevice-free, drainable hygienic design with documented material traceability — 3-A and EHEDG design principles, FDA-compliant materials, with 316L (1.4404) wetted parts electropolished to Ra ≤ 0.4 µm. Duplex 2205 and Hastelloy C276 are available for aggressive media.

3-A SanitaryEHEDG designFDA materialsASME-BPE316L · Ra ≤ 0.8 µm
Compare standards →

Case studies & guides

Real hygienic sine-pump applications and selection guides.

Case study

Whole-Strawberry Yogurt Transferred Intact

Read more →
Case study

Pulling Heavy Caramel Without Pulsation

Read more →
Case study

Stripping a Tank Clean with High Suction

Read more →
Guide

Sine vs Lobe vs Progressive Cavity

Read more →

Sine pump FAQs

The questions buyers and engineers ask most before specifying a hygienic sine pump.

What is a sine pump?
A sine pump is a positive-displacement pump that moves product with a single rotor shaped like a sine wave. As the rotor turns, it forms four chambers that carry product smoothly from inlet to outlet. The design gives gentle, near pulse-free flow and handles everything from thin liquids to heavy pastes, which is why it suits sensitive hygienic product.
How does a sine pump work?
The sine-wave rotor turns inside the casing past a fixed gate or scraper. Each turn creates expanding chambers at the inlet that draw product in, carry it around, and squeeze it out at the discharge. Because only one rotor moves and the chambers are large and open, the flow is smooth and the product is barely disturbed.
What is a sine pump used for?
It is chosen when product must be moved gently and without pulsation — fruit prep with whole pieces, yogurt and cultured dairy, creams and emulsions, pastes, gels and fillings, and cosmetic or pharma media. Its strong suction also makes it good for emptying tanks and stripping lines clean.
What is the difference between a sine pump and a lobe pump?
Both are gentle positive-displacement pumps, but the sine pump uses one sine-wave rotor instead of two intermeshing lobes. That gives even lower pulsation, larger and gentler cavities for delicate solids, and stronger suction. A rotary lobe pump runs faster and costs less, so it suits higher-flow, less delicate duty. Choose by how fragile and how viscous the product is.
What viscosity can a sine pump handle?
A very wide range — from thin, water-like liquids around 1 cP up to extremely heavy pastes near 8,000,000 cP. The fixed-volume chambers move thick product where a centrifugal pump cannot. Tell us your viscosity and temperature and we will set the right speed and size.
Can a sine pump handle solids and particulates?
Yes — that is a key strength. The large, open chambers carry whole fruit, soft solids and delicate gels through intact, with no close-clearance pinch to crush them. It is widely used for fruit prep, ready meals and chunky sauces.
Is a sine pump good for shear-sensitive product?
Yes. The single slow-turning rotor and large cavities add very little shear, so emulsions, live-culture dairy and creams pass through without breaking down. Run it at the lowest speed that meets your flow to keep shear to a minimum.
How strong is a sine pump’s suction, and can it self-prime?
Suction is a strong point. A sanitary sine pump can pull an inlet vacuum of about −0.85 bar (−12.3 psi), so it self-primes, lifts from below and strips lines and tanks nearly empty — useful for changeovers and minimizing product loss.
Is a sine pump positive displacement?
Yes. Each turn of the rotor displaces a fixed volume, so flow stays steady and roughly proportional to speed regardless of discharge pressure. That is why it holds flow against rising back-pressure and self-primes, unlike a centrifugal pump.
Does a sine pump give low pulsation?
Yes — among the lowest of any positive-displacement pump. The continuous sine-wave chambers hand product off smoothly, so discharge is nearly pulse-free. That protects delicate product, steadies dosing and filling, and reduces vibration on the line.
Is a sine pump CIP and SIP cleanable?
Yes. It has few internal parts and large, drainable flow areas, so cleaning solution circulates through it in place. The hygienic build runs to 130 °C (266 °F) for CIP and SIP, and crevice-free geometry meets 3-A and EHEDG design.
What is the maximum flow and pressure of a sanitary sine pump?
The hygienic range we reference reaches about 409 GPM (93 m³/h) and 220 psi (15 bar), at up to 130 °C (266 °F). That is the type’s general capability — your actual model is sized to your duty point of flow, pressure, viscosity and temperature.
What materials and hygienic standards does a sine pump meet?
Wetted parts are 316L (1.4404) as standard, with duplex 2205 or Hastelloy C276 for aggressive media. They are built to 3-A and EHEDG design principles with FDA-compliant materials and electropolished to Ra ≤ 0.4 µm. The exact certification path depends on your market and audit.
How quickly can you size and quote a sine pump?
Send your duty point — flow, pressure, fluid, viscosity, particle size and temperature — and we return a sized selection and a budgetary quote within one business day. Supplier-neutral, matched to your process, not to one brand.

About sanitary sine pumps

A sine pump is a positive-displacement pump named for its sine-wave-shaped rotor. The single rotor turns past a fixed gate, forming four chambers that fill at the inlet and empty at the discharge. Each turn displaces a fixed volume, so flow stays steady regardless of discharge pressure — and because the hand-off between chambers is continuous, the discharge is nearly free of pulsation.

Why hygienic processors choose sine pumps

The sine pump is the gentle specialist. Its large, open chambers and single slow rotor add very little shear, so whole fruit, soft solids, emulsions and live-culture dairy pass through intact. It pumps a remarkable viscosity range — from thin liquid to heavy paste — self-primes strongly, and strips lines almost dry to cut product loss. The 316L electropolished wetted parts meet the crevice-free requirements of 3-A and EHEDG hygienic design, with duplex 2205 and Hastelloy C276 for harsh media.

Matching the pump to your process

The right selection balances flow, pressure, viscosity, particle size, shear sensitivity and your cleaning regime. Because it is a positive-displacement pump, flood the suction on the thickest product and fit a relief valve or VFD cutout so it cannot deadhead against a closed valve. For higher-flow, less delicate transfer, compare a rotary lobe pump; for thin, water-like fluids at high flow, compare a sanitary centrifugal pump. Not sure? Send your duty point and our engineers will size it free.

Not sure if a sine pump fits?

Send your duty point — sized free in 24 hours

Request a Quote →
📞 CallRequest a Quote